Improvement in feed-water heaters for steam-boilers



ARMSTRONG. reed water Heater for steam-Boiler.

Patenfedjuhe 29,1875.

james Jrzfzf'ang IJvVEJvToR WITNESSES S u B 's it F.inirrnn STATEsPATENT -'OFFICE I VJAMES ARMsTROne, OFTOLEDO, OHIO.

IMPROVEMENT IN FEED-WATER HEATERS Fon sTEAM-BoiLERs.

Specification forming part of Letters Patent No. 1,611,959,` dated June29, 1875; applic-ation tiled `March 4, 1875.Y c

Tov all whom it may concern Be it known that I, JAMES ARMSTRONG, ot.Toledo, in the county ot' Lucas and Sta-te ot' Ohio, have inventedcertain new and usefull Improvements in Feed-Water Heaters andlPurifiers for Steam-Boilers, ot' which the tollowingis a specification:

The objects oi' my invention are to separate andcollect the sedimentandvto remove the' `)so as to create a slow upward and downward flow orcurrent Of the water on its way tO the boiler, and further relates tothe employlnent of cloth or other absorbent ,material against which thewater passes, or by and in contact with which the water iiows.

The improvements claimed will hereinafter specifically be designated.

In the accompanying drawings, which show one way of carrying out myinvention, my iinprovements 'are illustrated in connection with a heaterot the same general construction as that shown in Letters Patent grantedto me December 31, 1872, before referred to.

Figure 1 represents a view, in perspective, of a heater embodying myimprovements, with parts 'broken away to show the interior cou-.struction; and Fig. 2 a vertical central section through Fig. 1.

A heating-chamber, A, pans B B', and other parts connected with thechamber are similar in construction and` operation to those representedin my patent above referred to, except that, instead of fixed bracketsfor supporting the pans, I prefer to employ "a removable tripod orstand, C, resting ou the bottom and against the sides of theheating-chamberA, upon which the lower pan of the series rests. Apurifyingchamber, D, projects from the lower portion of the shell ot'the heating-chamber A, the two chambers communicating near or at thebottom, and for a suitable distance upward therefrom, as shown in thedrawings. The sediment or purifying chamber D isprovided. with a se-'ries ot' partitions or dividing-plates, d d d e e', alternatelyprojecting upward from the bottom of the chamber to near the top, anddownward from the top some distancebelow the tops ot' the platesprojecting'from the bottom. These plates cross the chamber, fit snuglyagainst its sides, and are secured in position. in any suitable way, Itis not essential that any particularnuniber of these plates should beemployed, or that `they should be arranged precisely as shown.y The lastone, d', of these plates I prefer to locate tartherffroin the plate nextto it than the other plates are apart for the location and support ot' afilter when one is used. By these partitions the water, as it ows intothe purit'yingchaniber from the heating-chamber, is forced to passupward between the shell otl the heating-chamber and the iirst one ot'the plates d, and then down over said plate, then up again under thesecond plate e, and so on, as indicated by the arrows, Fig.. 2. In thismanner a slow upward and downward dow is imparted to the water. Thesediment is separated from it and collects in the spaces or receptaclesff g, from which it may be removed at suitable intervals by means ot'openings or valves a b c, of suitable construction. The water, afterpassing over the tinal partition, d', is drawn ot'f through a pipe, E,in the usual manner. It will thus be seen that a portion ot the sediment(the heaviest particles) will be deposited in the lower part ot' theheating'- chamber, a portion of the sediment (the next heaviest) willsettle in the receptacle or space f, and so on, the lightest or finaldeposit being in the receptacle g. In this manner, Without the use Of alilter, I am enabled to free the water to a sufficient extent of foreignsubstances, for it is obvious that any sediment that would escape overthe last ofthe series ot' plates would float or be constantly moving inthe boiler and not settle or clog therein. The motion of the water inits course over and under the partitions is slow and regular, creatingbut little agitation, and consequently does not stir up and keep thesediment in motion.

To guard against the passage to the boiler of, grease or oilysubstances, as well as other light floating matter, I prefer to employTburla-ps or other cloth or fibrous or absorbent material arranged soythat the water in passing over one or more of the partitions shall passwith itssurtace just beneath or in contact therewith. Such material mayalso be carried along the side of one or more of the partitions.

In this instance I have shown the cloth F as secured, by means of aplate, H, around which it is passed, in position above the upper ends ofthe upwardly-projecting plates or partitions d, and as extending downalongthe inner side, or that side along which the water iiows, of thelast downwardly-projectin g plate, the cloth being then carried upwardandh un g or hooked over the last plate, d', thus forming an upwardfilter, h, supported by the plates d e. This rlter, as before stated,although it is not deemed necessary tov the proper purification ot' thewater, may be desirable in some instances. When not to be used as afilter the end of the cloth may be removed from the final partition dand allowed to hang down; or this end may be dispensed with entirely andthe cloth terminated either at the bottom of the plate e or be leftextending only across and -above the tops ot' the plates d d. l

By the use of the cloth or equivalent material, which should be renewedat proper inter- `vals, much of the grease floating on the water iscaught and absorbed, and many light floating substances are retained,while the use of a iilter or material through which the water ing areais secured in a given space than could be obtained were the ilterextended horizontally between its supports, and as grease carried by thewater oats on its surface, or at the highest point to which it canascend unimpeded in the water, the grease would be presented only to theupper portion ot' the tilter, leaving the larger part free to the directaction of the water.

It is obvious that instead of arranging the partitions in apurifying-chamber on the side, or forming a lateral extension of theheatingchamber, that they might be wholly or partially arranged beneaththe heating-pans in the bottomof the heating-chamber itself, the waterfrom the lower pan being conducted to one side so as properly to enterto the partitions.

I cla-im as my invention- 1. The feed-water heater and purifier,constructed as hereinbet'ore set forth, having a chamber in which thewater is heated, a puritying-chamber communicating with theheating-chamber by an opening in the lower portion of its shell, aseries of partitions crossing the purifying-chamber, extendingalternately from the bottom of said chamber upward to near its top, andfrom its top downward below the tops of said upwardly-projectingpartitions, and a pipe for drawing ott' the water after having passedover the last partition, whereby the sediment in the feed-water isdeposited according to its weight upon the bottom ofthe heating-chamber, between theishell ot' the heatingchamber and the rstpartition in the purifying-chamber, and upon the bottom of thepurifying-chamber between the partitions.

2. The combination of the purifying-chainher, partitions therein fordirecting the flow ofthe water, and cloth or absorbent material,arranged substantially as described, in contact with the water flowingthrough the chamber, whereby grease is caught wit-hout passing the waterthrough filtering material.

3. The combination of the purifyingchamber, a series ot' partitionscrossing the chamber and projecting alternately from the bottom ot' thechamber upward to near its top, and from the top downward below the topsot' the upwardly-projecting partitions, and a filter, extending betweenthe last two partitions and supported thereby, through which the waterpasses on its way to the pipe by which it leaves the chamber, thesemembers being con'- structed and operatin g substantially as set forth.

In testimony whereof` I have hereunto subscribed my na-me.

JAMES ARMSTRONG. Witnesses:

ISAAC BAUGHMAN, E. W. SHEPARD.

